In a statement, an Apple spokesperson acknowledged the issues and apologized:

We are aware that a small number of users are having issues with their third-generation butterfly keyboard and for that we are sorry. The vast majority of Mac notebook customers are having a positive experience with the new keyboard.

Unfortunately, while Apple initiated a service program offering free repairs of affected 2015-2017 MacBook and 2016-2017 MacBook Pro models with first- and second-generation butterfly keyboards, the latest 2018 MacBook Pro and 2018 MacBook Air models with third-generation butterfly keyboards do not qualify at this time.

Stern wrote her column without using the letters E or R as a clever way of illustrating the problem — there are toggle switches to turn each letter back on. Humorously, there are also toggle switches to read the article with double E’s or double T’s, as repeating letters are one symptom of the sticky keys.